| Tourn. | Year | Winner | CTI | Notes |
| IIT01 | 1989 | Choat | Atwood | First International Icehouse Tournament |
| IIT02 | 1990 | Conley | Travillian | |
| IIT03 | 1991 | Baker | Baker | |
| IIT04 | 1992 | Mackey | Efran | The Bates Discordian team win |
| IIT05 | 1993 | Russett | Cooper | Icehouse in the Cal Rogers Suite |
| IIT06 | 1994 | Russett | Hendrickson | Tournament was not held near Disclave |
| IIT07 | 1995 | Evans | Crowe | Dan Russett can't make it |
| IIT08 | 1996 | Davenport | Wendland | Death of the snowball |
| IIT09 | 1998 | Evans | | Tournament at Origins |
| WCI01 | 1999 | Grayson | Laurent | First West Coast Icehouse Tournament |
| IIT10 | 1999 | Looney | Evans | Tenth/Anniversary Tournament |
| WCI02 | 2000 | Szasz | Grayson | Baycon 18 |
| IIT11 | 2000 | Evans | Zuckerman | Looney Labs Big Experiment #1 |
| WCI03 | 2001 | Galloway | Galloway | Baycon 19 |
| IIT12 | 2001 | Davenport | Sugarbaker | Looney Labs Big Experiment #2 |
| WCI04 | 2002 | Galloway | Spehr | Baycon 20 in '02 |
| IIT13 | 2002 | Bryan | Bryan | Twenty participants! |
| WCI05 | 2003 | Lang | Follansbee | Lang also won WCZ2 |
| IIT14 | 2003 | Davenport | Kelly | Very close finals |
| WCI06 | 2004 | Grayson | Effinger | The last West Coast Icehouse tournament? |
| IIT15 | 2004 | Zuckerman | Tenney | Three new finalists |
| IIT16 | 2005 | Davenport | Welton | Fourth win for Jacob |
| IIT17 | 2006 | Lighton | Drobina | Jacob does not attend |
| IIT18 | 2007 | Hunt | Hunt | The third triple crown ever |
| IIT19 | 2008 | Taylor | Dutton | High noon on Saturday |
| IIT20 | 2009 | Davenport | Eller | Jacob wins again, but is the shotgun dead? |
| IIT21 | 2010 | McGuire | McGuire | Smallest tournament to date. |
| IIT22 | 2011 | Davenport | Davenport | Strong work again from Jacob, a triple crown. |